So sorry I'm not a little closer, I'd lend you a tank or stock tank. I don't know about repairing that tank without replacing the whole piece. I'd head to Tractor Supply, Home Depot or a similar store to get something (Brute Containers, stock tank) to house them in until you figure this out. No way in the tub, with all the cleaning products, etc residue. I'd be looking for a new tank if I were you. Anything on Craigslist today? Sorry this is happening to you, it's a fear of mine with all the big tanks I have set up.